International Business Machines Corporation

Other

Au Optronics Corporation

Takatoshi Tomooka

Johji Mamiya

Kazushi Yamauchi

Tetsuya Nogami

Kunio Enami

Disclosed is a processing on a host side and a panel side, thus optimizing a work load of the whole of a system including a graphics chip. Provided is an image display system which comprises a host side for executing an application and a panel side connected to the host side, and displaying an image on the panel side, the host side transferring undeveloped image data to the panel side when an image display is requested of the panel side having a panel memory for developing the image, the panel side developing the image in the panel memory based on the image data transferred from the host side and displaying the image developed in the panel memory on the panel.

Image display system

To make it possible to execute the same application regardless of the number of connected panels even in a multi-panel environment. A host system, which transfers an image signal to a plurality of panels connected thereto, comprises: a panel ID recognition section for recognizing a panel ID of a single panel or a predetermined number of collected panels as a unit; a window ID allocation section for allocating a window ID to a window which is a transfer processing unit of the image signal; a control signal output section for outputting a control signal used for setting a window ID to be processed to the panel ID to be read out in transferring the image signal; and an image signal transfer section for adding the window ID allocated by the window ID allocation section to the image signal, thus transferring the image signal.

Host device, image display device, image display system, image display method, panel attribute reading-out method and image display control method

To achieve a transfer of image data of large capacity from a host system side to a display side and a transfer of a far small quantity of data from the display side to the host system side with the maximum efficiency. An image display method which transfers image data between a host system side executing an application and a display side displaying an image, which includes the steps of: managing image data by the host system side, which belongs to a window in accordance with a sub-area obtained by dividing a display area of the display side, the window that is a region making sense in an image space of which the application is conscious; transferring the image data as a unit of a packet to the display side via the digital I/F; developing the image data transferred in a panel memory of the display side; grasping conditions concerning a transfer error in a unit of a window; and grasping the conditions of the transfer error through a signal line by the host system side.

Image display method, image display system, host device, image display device and display interface

An image display system includes a host system for executing an application program, a display connected to this host system, and an interface for connecting the host system to the display and used to display an image on the display. This interface enables packetized data including ID information to be transferred from the host system to the display. The interface is composed of a first interface for transferring packetized data together with packet order information and a second interface for enabling less data than the capacity of the first interface to be transferred from the display to the host system together with information of a packet transfer error recognized according to the order information.

Method for displaying image, image display system, host system, image display apparatus, and interface for display

A liquid crystal display cell includes a voltage amplification function therein for driving the cell with an AC voltage. The cell includes gate lines running in a first direction, a source line running in a second direction different from the first direction, a switching means which is turned on and off by a voltage applied to a first gate line so as to supply a voltage from the source line, a fixed capacitance capacitor is connected to the source line via said switching means, and a variable capacitance capacitor is connected to the source line via said switching means in parallel to said constant capacitor. The variable capacitor is connected to a second gate line which is independent of the first gate line, and the capacitance of the variable capacitor changes according to the voltage applied thereto through a second gate line.

Semiconductor device and driving method for semiconductor device

The quality of an image is improved even if the duration of data voltage is short for application. A gate line driver 34 sequentially applies the gate voltage to a number of gate lines G1-Gm by predetermined duration. Data lines are grouped into four groups each consisting of n lines (d1A-dnA: group A, d1B-dnB: group B, d1C-dnC: group C, and d1D-dnD: group D). A data line driver 40 and a multiplexer 38 sequentially perform for the data line groups A-D in the above predetermined duration application of data voltage to each data line in a predetermined data line group. A precharge controller 44 and a voltage switching circuit 46 apply to each of the data line groups A-D, through a transistor 42, a precharge voltage (+V.sub.1 or -V.sub.1) with the same polarity with that of data voltage being applied next time during the time from previous application of the data voltage to next application of it.

Growing community of inventors

Kanagawa-ken, Japan

Takatoshi Tomooka